Oil-burning locomotive.



1. P. NEFF. OH. BURNING LOCOMUVE. APPLSCATION HLU) OCT. L 1913 A v atente May 4, i919,

2 SHTS-SHEET i.

2 y ,Y ,Y

IN VEN TUR UNrrED STATES i'jirENT OFFICE.

JOHN P. NEFF, F EAST ORANGE, NEW

JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO AMERIGAN-ARCH COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELA- WARE.

OIL-BURNING LOCOMOTIVE.

improvements in the fire boxes of lo'cdirotive y boilers.

The object of my invention is to provide an oil-burning furnace for locomotives in which the several parts of the refractory lining shall be positively held in position; in which parts of the fire box lining shall mutually aid in retaining each other in positon; in which it shall be easy to replace a burned-out brick by a new one, and in which parts of the lining shall be easily removable for inspection or repair of the lower edge or mud-ring of the fire box.

A farther object of my invention is to provide a furnace for oil-burning locomotives in which the thickness of refractory lining shall be proportioned, in the different parts thereof, to theseverity of the vaction of the heat thereon, and in which the mudring rivets shall be protected' against the direct action of the high temperatures in the furnace without adding materially tothe weight of the lining.

A further object of my invention is to provide a pan construction and a refractory lining for oil burning locomotives by which the lower edge of the furnace, or, in other words, the mud-ring, shall be effectually protected fromjhe direct action of the heat of combustion; and to provide a lining wherein the shelf bricks fcan be readily removed to permit examination of the mud ring rivets without disturbing other parts of the lining.

My invention resides in a furnace for oilburning locomotives in which the shelf bricks are positively held in position and in which they interlock with other bricks of the lining.

My invention also resides in a construction for the lower part of a furnace, for an oilburning locomotive, which comprises asheet metal pan secured to and carried by the firebox walls, and a refractor 1 lining vhaving .shelf bricks positively hel imposition on theshelf. l

My invention also consists in the' several Specification of Letters Patent.

Patented May 4, 1915.

Application led October 1, 1913. Serial No. 792,782.

arrangements of parts and in the features of construction whereby the above and other objects are attained, all as hereinafter described and particularly pointed out in the appended claims.

My invention will be more readily understood by reference to the accompanying drawings forming part of this specification,

,and in which:

a portion of the fire box and lining, showing a modied form of my invention; and Fig. 4 is a view, similar to Fig. 3, showing another modified form.

In the equipment of locomotive boilers for the use of oil as fuel, it has been the object of inventors for some time to simplify the construction of the pan and its lining, and it is my particular object to provide such a construction wherein the several bricks of the lining shall mutually retain each other in position and wherein the refractory lining can be readily and easily replaced or repaired, and which when oncein position, shall be substantiallyv permanent. It has been my object to include iny such structure the protection of the lower edge of the fire box, particularly the mud-ring, or in other words, the rivets by which the mud-ring is secured. In some constructions this protection extends to the means by which the pan is secured or connected to the lire box rather than' to the mud-ring.

A lire box A, as illustrated in the drawings, is made up of flue sheet a, a rear sheet a2, a crown sheet a3 and side sheets a. The fire box itself is joined to the shell of the boiler by means of a mud-ring a5, which fills the space between the lower edge of the fire'box and the lower edge of the shell a of the boiler, forming the lower end of the water leg of the boiler. This mud-ring is The central portion of this sheet iron. s truc;. N

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ture is considerably depressed below the lower edge of the fire box forming a combustion chamber b2, which is somewhat longer than it is Wide. The rear end b3 of combustion chamber is vertical and is elf ed. The forward end b4 is also vertical, provided with a centrally arranged opening L5 in which is placed or held a fouel burner L6, by which fuel oil is forced into the combustion chamber and against the rear wall .795. The side walls If of the combustion chamber are connected'at their upper edges to the inner edges of a shelf-like portion b9 of the pan B. This shelf extends completely around the depressed, centra-l portion and forms what may be termed the main iioor of the fire box. In order t0 preserve the sheet metal structure forming the pan from destruction, I completely cover it with a lining C of refractory material, preferably in the form of ire brick. I arrange brick c' against the upwardly and outwardly inclined sides and. against the ends of the depressed portion which are of such a length that their lower ends rest upon the floor ba, and their upper ends extend slightly above the shelf b". I hold the lower ends of these bricks in position by means of floor bricks c2, which rest upon and protect the iioorb". I protect the shelf b" by means of shelf bricks c, which extend from the side sheets of the lire box and project i Vover the upper ends of the bricks c. To

hold these shelf bricks in position Iprovide upwardly extending projections 111 on the shelf portions of the pan, and I provide the.

shelf bricksl cE with openings or grooves o* in their undersides to receive these projections, said openings c4 providing the bricks with shoulders c5, whichengage the projections and hold the bricksy c3 in position against the side sheets of the firebox. The

outer ends ofthe under sides of these shelf bricks are cut away, as shown at c", 'for the purpose of overlapping the heads of the rivets a7, and thus protecting these rivets, or, in other words, the mud-ring of the fire bor against the high temperatures of the tire box gases. As a further means of holding the several bricks in position, I provide 'the inner ends of the shelf bricks 08. with grooves c", which receive the projections or ribs cs on the upper ends of the side bricks c', and thereby the shelf and side bricks are held against displacement.

It sometimes occurs that thejcombustion of the fuel is not perfect, and there results the accumulation of unburned material in the tire-box. For the purpose of causing this unburned materiahwhich is mainly car-1 bon, to graiitate into the depressed portion of the pan, I arrange the sheli:l bricks c3 in such a manner that their upper surfaces arev slightly inclined from their outer to their inner ends whereby any accumulation of unof the fire box.

burned material on the shelf is caused to gravitate into the depressed portion by reason of the jarring or agitation of the fire box due to the progress cf the locomotive over the rails. And for the purpose of permitn ting the easy removal of this unburned nmterial from the depressed portion, I provide at its rearward end, what may be termed, a cinder outlet b, which projects below the floor bg and is provided with a hinged door b, through which the accumulation may be removed.

In Fig. 3 I have shown a slightly modilied form of my invention wherein the outer edge of the pan instead of being joined directly to the mud-ring is connected by means of au angle iron b to the lower edge of the inner sheet oir'l the re box and the outer ends Vof the shelf bricks are adapted to 'protect this angle ironl and its connection with the fire box in the same `manner that they pro tect the mud-ring and its rivets in the form illustrated in Figs. 1 and 2. The an le irons b13 are secured tolthe side sheets a* o the fire box by means of studs b or rn any other suitable manner.

In Fig. 4 I have illustrated a* further modification of my invention'.` In this case the brick engaging, projections upon the shelf are replaced by a continuous angle iron 15 which is secured to the inner edge of the shelf, and has one of its flanges 251 projecting upwardly substantially at the irner edge of the shelf, 'and at the upper edge of the inclined side wall b1. The shelf bricks c, as in the former instance,` va'reprovided with r'rooves c for receiving the upwardly exten ing projections c5 on 'the upper ends of -the side bricks. c'-'b -Which the Shelf bricks and the lside brie s are'interlocked. In this instance, however, I make the grooves c wide enough to receive' the flange b1 in addition to the projection c, thus doing away with the second grooves c in the under side of the .shelf bricks, as shown in the former instance. This simplifies the manufacture of these side .bricks. The angle iron b ei'ectively re'tains'the shelf bricks in position `with their outer ends against the side sheets of the fire-box,i and the. under sides of the side 4bricks are cut away, as in the former instance, to receive or protect the angle iront, which in this instance secures the pan to the side sheets The novel construction shown in Fig. 4 of the drawings is not specilically claimed 1n this case,l but is both described and 'claimedin my divisional application Serial No. 868,652, filed October 26,1914.

I clair'n i p In a locomotive boilerfire box, a metal structure closingl the alower, end thereof. and having a depressed central or- -tion fprining a fuel'oil combustion cham er,

- its outrr edfe to the lower wart of the fire box and a dein'cssed central portion having a substantially horizontal floor and upwardly extending sides, spaced projections on, the shelf, refractory bricks resting on the shelf and havingshoulders engaging said projections to hold the bricks inyplace, and refra'for)r` bricks lining the sides of said depriV ,d portion having upwardly extending projections nterlfrcking with said shelf bricks, whereby thesaid bricks are held against displacement.

5?. ln a locomotive boiler,I a fircbox pan joined :it its edges to the lower edge of the lire box, said pan having :i marginal shelflike portion and a .depressed central portion, lire bricks resting on and covering said shelf portion, inwardly projecting parts on the lower edge of the lire box above said pan, said shelf bricks being cut away on the lowei` sides of their outer ends to overlap said projections, upwardly extending projections on,

said pan and shoulders cn said shelf bricks engaging said upwardly extending projections. said bricks being held in position thereby, refractory bricks lining said de pressed portion and having upwardly extending proieftions interlocking with the inner ends of said shelf bricks, whereby said lining bricks are held against displacement.

l. ln a locomotive boiler fire-box, a closed pan having a depressed central portion provided with ui'nvardly and outwardly inelined side walls, a substantially horizontal shelf joining the upper edges of said side walls to the lower-"edges of the lire-box, fire bricks lining the upwardly extending sides of said depressed portion, other refractory bricks covering the floor ofr said depressed portion and holding the lower ends of theI said bricks in position, shelfbricks protecting said shelf and having interlocking engagement at their inner inner ends with the upper ends of said side bricks, upwardly extending projections on said shelf and shoulders on the side bricks engaging said projections whereby the side bricks are held in position. l

5. In a locomotive fire box a bottom closing pan having a depressed central .portion and a horizontal shelf joining the edges of the depressed portion to the fire box, refractory bricks lining the bottom and sides of the depressed portion and refractory bricks protecting the shelf, the inner ends of the shelf bricks and the upper ends of the side bricks being interlocked, as and for the purpose specified.l

G. In a locomotive fire box a bottom closing pan having a depressed portion and a horizontal shelf joining the edges of the depressed portion to the fire box, refractory bricks lining the bottom and sides of the depressed portion and refractory bricks protecting the shelf, the inner ends ofthe shelf bricks overhanging the side bricks and having grooves in their lower sides to receive the upper ends of the side bricks, as and for the purpose specified. v

In testimony whereof, I have hereunto set my hand, this 22nd day of Sept., 1913, in the presence of two subscribing Witnesses.

JOHN P. NEFF.

Witnesses:

JAS, T. ANTHONY, EMILY L. MYERS. 

